Vapor electric lamp and connections.



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PETER COOPER HEWITT, OF RINGWOOID MANOR, NEW JERSEY, ASSIGNOR, BY MESNEASSIGNMENTS, TO COOPER HEWITT ELECTRIC COMPANY. OF HOBOKEN. MEW',-JERSEY, A CORPORATION OF NEW JERSEY.v r

VAPOR ELECTRIC Specification of Letters Patent.

LAMP ANL: uorinsorrlons.

llatented. Sept. i5, im

. Original application filed March i9, 1903, Serial 1\To i148,504.Divided and this application filed January l0.

1912. Serial No. 670.358. i

To all 'iff/"mm it m fly com-erw Be it known that I, Pn'rnu (ooinuHnwi'r'r, a citizen of the United States. and resident o1 RingwoodManor', county ot' Passaic, State of New Jersey, have invented certainnew and useful Improvements in Vapor illectricLamps and Connections, ofwhich the following is a specification.

The present invention relates to an elec trical apparatus in which asuitable gas or vapor inclosed in a transparent container isr madeluminous by the passage of electric current. The type oi' apparatusillustrated is adapted for various uses, and the novel features of thesaid device Will be explained in the specification and fully set forthin the claim.

The illustrations, Figures l and show similar types of electricalapparatus of this sort, the main di'eren'ce appearing-in the electricalconnections for the lamp.

The container consists ot a tube, l, of glass or other transpz'xrentmaterial, provided with electrodes, 2, 3, and et. The electrode 2 ishere shown as a body of solid conducting material. such as iron, whilethe electrodes 3 and 4 appear` as small masses of mercury. Any suitablematerials may besubstituted for those-named. The electrodes 2 and 1 aremounted at'the opposite ends of the tube 1, and the electrode 3 iscontained in a small pocket/ 5, Formed on the container l about midwayof its length. The device is provided with a chamber G at thel topsefl'vin r as a cooling or condensingi chamber whereby the vapors formedin the operation ol the. lamp are condensed and the general capacity oithe device. for radiating heat is increased.

ln big. 1, the electrodes '2. and 3 are connected with the, positiveside of an electric vcircuit and the electrode l with the negative side.in Fig. il. the electrode 2 is positi ve and the electrodes Il and l arenegative. l may interpose suitable resistances or indue tance. devices.'l and-8; in the ivircs leading to the electrodes( as may be desired orre.-` quired for dillcrent uses of the apparatus and for steadying the.operation thereof.

ln the lamp illustrated in Fig. 2, it is 'This is found to be found thatthe raporin the lower part of the lamp is denser than in the upper part,the quantity ol current passing throiigh the said lower hal'l beingapproximately double that passing through the upper half. The apparatusmay be used in testing the operations which take place in aninelosed gasor vapor carrying electric current, or it may be utiliz/.ed 'Forproducingv diilerent eii'ects in ,li1i'erent parts of a single inelosingchamber.

Figi'. i2 is made use ot simply to Yillustrate a -diii'erent set ofconnections for the electrodes. and it will be understood that theseconnections may he still further varied to suit diliercnt requirements,at the will of the operator.

ln operating this lamp the mercury which is condensed in the chamber (3is redistributed for condensation, passing down the tube into the pocket5 and overilowing from that pocket .into the lower part of the tube andthere a valuable 'feature of the lamp and' is one oi" the featuresconstituting the present invention.

This application is a division of my application iled March 19thj 1903,Serial Number 14H.51)i; issued on January 16, 1912, as Patent Number1.014.705. and a ci'nnpanion to my application filed "July lith, 1911,Serial Number 637.951. issued on January 1G, 15112 as Patent Number1,014,965, which is also a division oi the first named application.

l claim. as my invention A vapor electric device tical tubular portion.a condensing chamber at the top thcreoi'. a solid anode within the saidchamber and a plurality of vaporizable cathodes disposed at intervalswithin the vertical tube. the said vaporizable electrodes beingconnected together outside the tube..

Signed at- New York in the county of New York and State of 'New Yorkthis 8th day oanuary A. D. 1912.

Witnesses F. E. BARNES, R. Gr-` l'lnwrr'r.

reconstructing the electrode 4;

. l comprising a ver-

